Britax Car seat age from 15kg. Recommended for children up to the height that is the legal requirement for children to remain in a booster seat - 135cm or 4 Foot tall. Has side Impact protection with neck rest. Head piece extends to the height of the child by one simple movement. Head fits nicely between the shoulder protection. Great if your on a long journey and your child falls asleep as neck is supported. Excellent condition. 6 months old. Barely used as bought as spare. Purchased from Halfords before it was reduced to half price for £89. 99. Any questions please ask.